Uhm, that link pertains to pressures in bicycle tires.
Apples n Oranges.
I went on tirepressure dot org, a site I use, not the end-all authority, but one that confirms what I stated earlier: in most, not all cases, a higher cold pressure is specified for trim levels of car models with wider, lower profile tires on greater diameter wheels.
And my theory still stands:
A wider tire patch means more of the tires mass is spread further from center line of tire, increasing something called hysteresis, or delayed flexing of the rubber in response to turning.
To reduce this tendency, a higher tire pressure may be employed. This extra 1-2psi over what a narrower tire might be inflated to can also quicken the response of wider tires to driver steering input, something which is not a high priority when I’m out driving.